Justin Sunga Volume Post ( 7.4)

Outside Circle;
r = d÷2 v = pi.r.r.h
r = 10÷2 v = 3.14x5x5x40
r = 5cm v = 3140cm³
3140cm³-2009.6cm³ = 1130.4cm³

Inside Circle;
r = d÷2 v = pi.r.r.h
r = 8÷2 v = 3.14x4x4x40
r = 4cm v = 2009.6cm³

chris reyes volume post

Chapter 7.3

Popcorn Lover ;

r= d÷2 v = pi.r.r.h

r =30÷2 v = 3.14x15x15x20

r = 15cm v = 14,130cm³

Jumbo ;

r =d÷2 v =pi.r.r.h
r =20÷2 v =3.14x10x10x40
r =10cm v =12,560cm³

Chapter 7.4

Outside Circle;
r = d÷2 v = pi.r.r.h
r = 10÷2 v = 3.14x5x5x40
r = 5cm v = 3140cm³
3140cm³-2009.6cm³ = 1130.4cm³

Inside Circle;
r = d÷2 v = pi.r.r.h
r = 8÷2 v = 3.14x4x4x40
r = 4cm v = 2009.6cm³

Robin's Volume Post

Chapter 7.3



Jumbo:

R=d÷2 V=pi.r.r.h
R=20÷2 V=(3.14x10x10)x40
R=10cm V=12,560cm³


Popcorn Lover's

R=d÷2 V=pi.r.r.h
R=30÷2 V=(3.14x15x15)x20
R=15cm V=14,130cm³

Chapter 7.4



Inside Circle :

R=d÷2 V=pi.r.r.h
R=8÷2 V=(3.14x4x4)x40
R=4cm V=2009.6cm³

Outside Circle :

R=d÷2 V=pi.r.r.h
R=10÷2 V=(3.14x5x5)x40
R=5cm V=3140cm³
3140cm³-2009.6cm³=1130.4cm³

Justin Lorenzo's Math Textbook Homework

Pages 259-260 Answers to # 7, 12, 14 (Math Textbook)


7.)

A) V= B x H ÷ 2 x H

V= 12 x 7 ÷ 2 x H

V= 42cm2 x 7cm2

V= 294cm3

B) V= B x H ÷ 2 x H

V= 8.1 x 2.2 ÷ 2 x 15

V= 8.91m2 x 15m2

V= 133.65m3

C) V= B x H ÷ 2 x H

V= 320 x 210 ÷ 2 x 400 / 67 200 ÷ 2 x 4

V= 33 600mm2 x 4mm2

V= 13 440 000 mm3
12.)

Base (cm)
7
18
20

Height Of Triangle (cm)
10
10
5

Height of prism (cm)
70
1080
700

14.)

V= B x H ÷ 2 x H

V= 15 x 8 ÷ 2 x 80

V= 60cm2 x 80cm2

V= 4800 cm3

If there are any other solutions, or mistakes I have typed please feel free to comment!

Which is the correct formula for volume?

V= B x H

V= B ÷ H

V= B x H ÷ 2 x H

V= B x H ÷ 2

or View Results

Create your own poll at Flisti.com



















7.3

(picture1)

v = π r r h
v = (3.14x5cmx5xm) x 23
v = 1805.5cm3

7.4

(picture 2)

r=d/2 bxh1/2 x h2
r=25/2 40x35/2 x 140cm2
r=12.5cm2 = 98000cm3

v=π r r h
v= (3.14x12.5x12.5)x100
v=49062.5cm3

98000cm3 - 49062.5cm3 = 48937.5cm3